heat illness

[TsPoet]

I've never tolerated heat very well.
Sunday, the high was 68 F. Yesterday 98. Today, I tried to do a 10 mi TT - 100 F on a frontage road off a highway, no shade. My time at 7.25 miles was 4:48 below the same TT route 3 weeks ago, going strong, feeling good.
Then it hit - or rather went - suddenly lost the oatmeal I'd eaten 1.5 hr before. Felt like I was gonna die.
This is the first TT under 15 miles that I've carried water (someone told me not to, so I haven't been). Today I brought water because of the heat. 1.5 hr before I ate 1/2 cup of oatmeal - which is what I've been doing for the last month for these things.

So, was it the heat? Was it drinking water? Was it drinking warm water? I put some ice in the water, but I was using a drinking tube/resevoir system and the water in the tube always gets hot. Was it using a drinking tube?
Are there too many possibilities?
Anyone else have heat issues? What do you do?
Help, I'd hate to not be able to ride - Summers here average 95-105 degrees.
It's been over an hour and I'm still sweating so bad I've got stinging eyes and I feel very hot faced.
Sue

[KSH]

Not sure.

But, I would ALWAYS carry water for 15 miles in heat like that.

Be safe out there. Stay hydrated.

[SadieKate]

The first ride in really hot weather after a sudden temperature change always makes me sick, nauseated and dizzy, if I'm not careful. If I had raced on the first hot day of the year I would have vomited also.

[Dianyla]

Hot weather also raises your heartrate by about 10 bpm, which means you're more likely to hit your max heartrate. That's when you puke - the vasovagal response from staying at a very high heartrate.

As for the extra-salty sweat, this is part of acclimation. Once you're acclimated to the warmer season your sweat will be more diluted.

Drink fluids, remember to take electrolytes, and just take it easy until you are more used to the heat. It never does get comfortable, but it will get a little better.

[mellic]

Sounds like dehydration and heat exhaustion to me. We get temperatures over 85 for about 3 months of the year, and honestly the best thing to do is avoid training during the hot part of the day. Train either early morning or whack on some lights and go out at night. Some days here it gets so hot (around 115) that I train on the wind trainer under the airconditioner.

Heat exhaustion/stroke is an awful feeling and when it does happen I would recommend going for a cold shower and drinking plenty of water.

[hirakukibou]

I have issues with heat too. For one thing, I don't sweat much and overheat. I carry a small spritzer bottle with water in it to spray myself when I get too hot. And I agree with the other posts, it's important to stay hydrated in the heat. Heat stroke can be dangerous.